AMPSS
Astec Modular Power Supply System
™
AK60A
Economy
Series Highlights
•
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High Efficiency - up to 88%
100W Output Power
Excellent transient response
85°C baseplate/case operating temperature
Low output ripple and noise
High Reliability - over 1 million hours MTBF
Wide input voltage range
Designed to meet Telecom specification
Fixed switching frequency
Series
50-100W Output Power
DC-DC Converter Module
Technical Reference Manual
Contents
AK60A Economy Series
22
Introduction ...................................................................................................... 2
Special Features .............................................................................................. 2
Ordering Information ........................................................................................ 3
Safety ............................................................................................................... 3
Electrical Specifications .................................................... 4
Absolute Maximum Ratings – all models ......................................................... 4
Pin Connections - all models ............................................................................ 5
Electrical Specifications for 24V Input Models (AK60A-024L-xxxFyy) ............. 6
Insulation - all models ...................................................................................... 6
Electrical Specifications for 48V Input Models (AK60A-048L-xxxFyy) ............. 8
Functional Description .................................................... 10
Remote Sense (+SENSE, -SENSE) .............................................................. 10
Enable Control (ENABLE) .............................................................................. 10
PRI AUX ......................................................................................................... 10
CLK IN ............................................................................................................ 11
Output Voltage Adjustment (V ADJ) ............................................................... 12
Signal Common (S COM) .............................................................................. 12
Design Considerations .................................................... 13
Input Bulk Capacitors ..................................................................................... 13
Remote Loads ................................................................................................ 13
Input Undervoltage Protection ........................................................................ 13
Conducted EMI .............................................................................................. 13
Output Ripple and Noise ................................................................................ 13
Input Fusing ................................................................................................... 13
Break Regulation ............................................................................................ 14
Overtemperature Protection ........................................................................... 14
MTBF ............................................................................................................. 14
Thermal Data ................................................................................................. 14
Application Example ........................................................ 15
Mechanical Information ................................................... 16
Dimensions .................................................................................................... 16
Recommended PCB Layout ........................................................................... 17
Heatsink Mounting Information ...................................................................... 18
AMPSS
®
Reference Manual
Rev. 02 May 97
Introduction
AK60A Economy Series DC-DC Converters
22
+ IN
31
MOSFET
switcher
24
+ OUT
– IN
32
26
– OUT
300V modules
only
28
S COM
5
+
31
32
7 ENABLE
8 CLK-IN
-
PRI AUX 6
S COM 5
PRI AUX
6
PRI AUX
Over-
voltage
protection
PWM
control
and
gating
RSV 2
+ SENSE 1
3 V ADJ
4 - SENSE
AMPSS
TM
POWER MODULE
Voltage
sensing
and
control
1
+ SENSE
ENABLE
7
+
22 23 24
26 27 28
-
OSC
4
– SENSE
CLK IN
8
Primary side
Secondary side
3
V ADJ
Internal
temperature
sensor
Introduction
The AK60A is an isolated, single output DC to DC
converter module, providing up to 100W output. The
AK60A features primary side control, remote enable,
remote sensing and a baseplate operating tempera-
ture of up to 85°C.
Special Features
•
High Efficiency - up to 88%
•
500 KHz fixed frequency switching
•
85°C baseplate/case operating temperature (with
•
•
•
•
•
•
•
no derating)
Low output ripple and noise
Excellent transient response
High Reliability - over 1 million hours MTBF
Wide input voltage range
TTL compatible enable control
Adjustable output voltage
Overtemperature and short circuit protection
Rev. 02 May 97
AMPSS
®
Reference Manual
23
AK60A Economy Series
Ordering Information
Input
Voltage
48V
48V
48V
48V
48V
48V
48V
48V
48V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
24V
Output
Voltage
5V
5V
5V
12V
12V
12V
15V
15V
15V
5V
5V
5V
12V
12V
12V
15V
15V
15V
24V
24V
24V
Output
Current
10A
15A
20A
4.2A
6.3A
8.3A
3.3A
5.0A
6.7A
10A
15A
20A
4.2A
6.3A
8.3A
3.3A
5.0A
6.7A
2.1A
3.1A
4.2A
Output
Power
50W
75W
100W
50W
75W
100W
50W
75W
100W
50W
75W
100W
50W
75W
100W
50W
75W
100W
50W
75W
100W
Model Number
AK60A-048L-050F10
AK60A-048L-050F15
AK60A-048L-050F20
AK60A-048L-120F04
AK60A-048L-120F06
AK60A-048L-120F08
AK60A-048L-150F03
AK60A-048L-150F05
AK60A-048L-150F07
AK60A-024L-050F10
AK60A-024L-050F15
AK60A-024L-050F20
AK60A-024L-120F04
AK60A-024L-120F06
AK60A-024L-120F08
AK60A-024L-150F03
AK60A-024L-150F05
AK60A-024L-150F07
AK60A-024L-240F02
AK60A-024L-240F03
AK60A-024L-240F04
Please contact Astec for information on other output voltages, power ranges and configurations.
Safety
UL:
CSA:
VDE:
CE:
UL1950
CSA C22.2 No.950
VDE 0805 (48Vin only)
EN60950 (48Vin only)
CE Mark (48Vin only)
Please contact Astec for information on specific module approvals.
Note:
Ensure all modules are used according to the Installation Instructions provided with each module.
All modules are designed to meet the following specifications:
ETS300-132-2
ETS300-386-1
(1)
EN55022-A
(1)
EN55022-B
(1)
EN41003
IEC6100-44
(1)
IEC6100-45
(1)
IEC950
VDE0871-A
(1)
VDE0878-A
(1)
BTNR2511(5)
(1)
(1)
Require additional external circuitry for full compliance. Please refer to application section of this manual
or contact technical support office for further information.
24
AMPSS
®
Reference Manual
Rev. 02 May 97